Portable drilling rig



June 13,- 1939. c A. HIRSCHBERG PORTABLE DRILLING RIG Filed Feb. 4, 1937 4 Sheets-Sheet 1 I Chum/[Iliracfibery l VENTOR ATTORNEY June 13, 1939. Q A HI HBERG 2,162,552

PORTABLE DR ILLING RIG Fi led Feb. 4, 1957 v 4 Sheets-Sheet 2 I0 44 Ch as. Afiirsclz berg INVENTOR ATTORNEY J 1939- c. A. HIRSCHBERG 5 PORTABLE DR ILLING RIG Filed Feb. 4, 1937 4 Sheets-Sheet 3 4 J8 3 26 4 m: s

Chad. A. Himchbery June 1939- c. A. HIRSCHIBERG 2,162,552

PORTABLE DR ILLING RIG Filed Feb. 4,' 1937 4 Sheets-Sheet 4 v ChaaLA. invclzbery IN ENTOR ATTORNEY Patented June 13,. 1939 UNETED STATES ATE'NT OFFICE PORTABLE DRILLING RIG Virginia Applicaticn February l, 1937, Serial No. 124,093

14 Claims.

This invention relates to portable drilling rigs particularly designed for use in connection with percussive drills such as rock drills or the like, and the primary object of the invention is to provide a rig which is mobile and may be moved from place to place with comparative ease and one which will permit of a wide range of settings of a drill to meet conditions of drilling as they arise.

In quarrying of rock, in grading for highway construction, in excavating, and in many other instances where drilling and blasting of rock is required, it has been the practice where the use of drills too large to be hand-held is necessary,

to set up what is commonly called drill columns for supporting the drills during operation; however, these columns must be taken apart and carried from one position to another, assembled and set up for each series of holes drilled. This requires considerable labor and time and is costly, and also the number of adjustments of a drill on such a column is limited within a relatively narrow range.

Recently the art has embodied portable drilling rigs or apparatus with various degrees of mobility and adjustability of drills, such as those known as wagon drills, and others lighter in weight and more mobile having comparatively wide ranges of adjustment, which overcome the disadvantages of the column mountings. Such rigs are designed however for use in relatively open and unrestricted spaces and are not adaptable for use in places where it is necessary to drill holes close to a wall or in other relatively confined places.

It is an object of the present invention to provide a portable drilling rig which embodies all of the advantages of drilling rigs as above referred to and includes many other advantages and structural improvements which materially broaden its scope of operation and further reduce the labor and time required in setting the drill carried thereby.

With these and other objects in view, as may appear from the accompanying specification, the invention consists of various features of construction and combination of parts, which will be first described in connection with the accompanying drawings, showing a portable drilling rig of the preferred form embodying the invention, and the features forming the invention will be specifically pointed out in the claims.

In the drawings:

Fig. 1 is a side elevation. of the improved portable drilling rig.

Fig. 2 is a top plan of the improved portable drilling rig with the drill-carrying members and the drill removed.

Fig. 3 is a side elevation of the improved drilling rig with the drill removed.

Fig. 4 is a fragmentary vertical section taken on the line 44 of Fig. 3.

Fig. 5 is a detail cross section through one part of the drill-carrying member.

Fig. 6 is a longitudinal section, with parts broken away, taken on the line 66 of Fig. 5.

Fig. 7 is a detail cross section through a part of the drilling rig taken approximately on the line 'll of Fig. 3;

Fig. 8 is a detail section taken on the line 8--8 of Fig. 3.

Fig. 9 is a plan View of a modified form of the part of the drill-carrying member.

Fig. 10 is a cross section on the line |BHJ of Fig. 9.

Figs, 11 to 18 inclusive, are diagrammatic views of the drilling rig showing it in various phases of adjustment and illustrating some of the many positions and/or adjustments of the positions of a rock drill which it is possible to obtain by the present portable drilling rig.

Referring more particularly to the drawings, the improved portable drilling rig comprises a carrying frame I, which is shown in Figure 2 of the drawings as substantially U-shaped in plan with one end open.

The U-shaped carrying frame I has wheels 2 and 3 connected to the ends of the legs or side members 4 of the frame, and a third wheel 5 swivelly connected by means of a suitable bracket 6 to the center of the cross member 1 thereof. The wheels 2 and 3 are adjustably connected by means of swinging arms 8 to the ends of the side members 4 and they are held in adjusted position by means of locking pins 9 and segments l0. Thus the wheels 2 and 3 may be positioned with their axes parallel to the side members 4 as clearly shown in Figure 2 of the drawings, or they may be swung at right angles thereto, with their axes extending transversely of the side members 45, depending upon the particular use to which the drilling rig is to be put, or in other words to the particular type of drilling to be performed. The wheel 5 being swivelly connected may be swung to align with the wheels 2 and 3.

In the drawings, the wheels 2, 3 and 5,'are shown as flanged wheels for travel over rails shown at II, but it is to be understood that any suitable type of wheel may be employed without departing from the spirit of the present invention, and that the Wheels are easily removable in any approved well-known manner so that the flanged wheels may be replaced by flat unflanged Wheels, by wheels having rubber tires, or by any other type of wheel desired.

The carrying frame I has a drill-supporting frame I5 pivotally connected thereto intermediate its ends by hearing structures I6, the bolts I1 of which are loosened to permit pivotal movement of the tool-supporting frame I5 and are tightened to hold the tool-supporting frame in adjusted position.

If it is so desired, the lower cross bar I8 of the frame I5 may have a gear I9 thereon which meshes with a pinion 20 carried by the carrying frame I. The shaft 2I on which the pinion 20 is mounted has a wrench head 22 thereon by means of which a Wrench, crank handle, or the like, may be used for rotating the pinion 20 and the gear I9 to swing the tool-carrying frame I5 on its axis. As clearly shown in Figures 1 and 2 0f the drawings, the tool-carrying frame I5 extends transversely of the U-shaped carrying frame I and parallel to the direction of travel of the portable drilling rig when the wheels 2, 3 and 5, are positioned with their axes parallel to the side members 4. When the wheels 2, 3 and 5, are adjusted with their axes transversely of or at right angles to the side members 4 then the tool-supporting frame I5 extends transversely of the direction of travel of the portable drilling rig and it has its axis transversely of the direction. of travel of the frame.

The tool-supporting frame I5 comprises, besides the lower cross bar I8 the sides or standards 23 which adjustably carry the cross arm 24 on their upper ends. The cross arm 24 is connected to the standards 23 in such manner as to permit rotary movement thereof with respect to the standards by means of the cones 25 formed on the ends thereof which fit in the cone-shaped recesses in the heads 26. Looking cones 21 are provided which engage in opposite or opposed cone-shaped recesses in the heads 26. The cones 25 and 21 are tightly clamped in their, respective coneshaped recesses by means of the bolt or clamping rod 28 which extends longitudinally through the cross arm 24 and through the cones 25 and 21, and the nuts 29 which are threaded thereon.

A tool-carrying unit 30 is adjustably mounted on the cross arm 24 and includes a number of elements among which is the carrying sleeve 3|. The carrying sleeve 3I has a pinion 32 rotatably supported thereby which meshes with a rack 33 formed on the cross arm 24 so that rotation of the pinion 32 by the crank handle 34 will move the sleeve 3I longitudinally along the cross arm 24 and permit adjustment of the rock drill or tool 35 which is carried by the unit 20 transversely across the frame I for permitting various drilling positions thereon, which will be more specifically hereinafter described in connection with Figures 11 to 18 inclusive, of the drawings.

A key 36 is. formed on the cross arm 24 and engages in a keyway 31 in the sleeve 3| for preventing rotation of the sleeve 3| with respect to the cross arm 24.

A slide or elongated guide 38 is attached to the sleeve 3I by the clamp structure 39 and it has rabbeted ways 40 which receive the slidable coupling M. The slidable coupling 4| is held in adjusted positionsalong the slide 38 by means of the clamp or clamps 42. The clamp or clamps 42 are connected to the slide 38 by T-bolts 43 of usual approved construction and these Tbolts 43 are loosened to permit sliding of the coupling 4I along the slide 38 and tightened to hold it in position.

The coupling M is recessed as shown at 44 to receive the cone 45 carried by the drill-feeding mechanism 46.

The drill-feeding mechanism 45 forms a. part of the drill or drilling machine 35 and in the drawings this drilling machine 35 is shown as embodying a pneumatic feed type such as illustrated in Patents #1,690,859 and #1,659,l39, but it is to be understood that any approved type of drilling machine may be used in connection with the present portable drilling rig without depart ing from the spirit of the present invention.

The coupling 4| embodies a clamp 41 which is held in clamping engagement with the cone 45 by a T-bolt 48 which permits the clamp 41 to be swung out of clamping engagement with the cone 45. The recess 44 in. the coupling M is circular in plan to fit or receive this cone 45 (which come is of the usual standard type now employed in drilling machines) so that when the clamp 41 is loosened the drilling machine may be rotated on the axis of the cone 45 and consequently on an axis transversely of the pivotal axis of the tool-supporting frame I5. This is in effect pivotal movement of the drilling machine in a plane transversely of the plane of the supporting frame I5.

Anchoring members 50 are adjustably carried by supporting brackets 5I which are inturn adjustably mounted on the uprights or standards 23. These anchoring devices 50, their supporting brackets, and the manner of locking or clamping the anchoring members in adjusted positions, are of conventional type, as well as the anchoring members 52 carried by the brackets 53. The brackets 53 are attached to the carrying frame I.

From the foregoing description taken in connection with the accompanying drawings, it will be apparent that a mobile drilling rig having a relatively great number of adjustments of position of the drilling machine 35 carried thereby, has been provided, and in Figures 11 to 18 inclusive of the drawings some of these various adjustments are illustrated.

The provision of the slide 33 which will permit longitudinal movement of the drilling machine in a plane parallel to the plane of the axis of the cross arm 24 and, when the unit 30 has been moved to the limit of its movement in either direction, will permit the drilling machine to be moved beyond the sides of the carrying frame I and beyond the wheels 2 or 3 so as to permit down-hole drilling close to a wall or upright surface.

In Figure 11 of the drawings the drilling machine 35 is shown in such a position. In Figure II the unit 38 has been moved the limit of its movement to the left along the cross arm 24 and the coupling member M has been moved along the slide 38 so that the drill may be placed close to the vertical wall A for down-hole drilling. The dot-and-dash lines IllIl indicate various other possible positions of the drilling machine with the carrying frame I5 in position shown in this Figure 11, which is its vertical position with the wheels 2-, 3, and 5 positioned with their axes transversely of the pivotal axes of the supporting frame I5. Of course only a few of the dot-anddash lines I80 are shown in this view but it is understood that the drill 35 may be adjusted in any infinite number of positions along the cross arm 24, within the limits of the slide 38 and the arm 24.v

Figure 12 of the drawings illustrates a further type of adjustment which is available with the present portable drilling rig. In this Figure 12 the carrying frame I5 is in its upright position with the wheels 2, 3, and 5 positioned the same as in Figure 11, that is, the carrying frame is in a plane parallel with the direction of movement of the portable drilling rig and with its pivotal axis also parallel with the line of movement of the drilling rig. The unit is illustrated in an intermediate position on the cross bar 24, and it is of course to be understood that it may be in any one of the many positions permitted along the cross arm. The dot-and-dash lines IIII illustrate how the drilling mechanism may be swung on a pivot or rotated, such movement being permitted by the connection of the cone 45 with the coupling member M. This will permit the drilling of a plurality of down-holes at various angles to the perpendicular.

Figure 13 shows a slightly different adjustment which is permitted by the present drilling rig. In this figure the wheels 2, 3 and 5, are swung so that the line of travel of the portable drilling rig will be transversely of the pivotal axis of the tool-supporting frame I5. The drill-cartion along the cross arm 24 and the dot-and-dash lines I02 indicate various pivotal or rotary positions of the drilling machine 35 which may be obtained in this position through the medium of the coupling 4| and the trunnion 45. It is of course to be understood that with the wheels adjusted to the positions as shown in this Figure 13 various other adjustments of the unit 30 and the drilling machine 35 are permissible, and the unit 36 may be moved along the cross bar 24 to position the drill 35 beyond the edges or sides of the frame I and beyond the wheels. Figure 17 of the drawings shows in top plan such an arrangement, the dot-and-dash lines I03 indicat- 7 ing the possibilities of the adjustment of the drilling mechanism 35 along the cross bar 24.

Figure 14 shows the tool-carrying frame I5 in one of the infinite number of positions into which it may be moved by virtue of its pivotal connection through the medium of the bearings It with the carrying frame I. In this Figure I4 the supporting frame I5 is swung on its pivotal axis so that the drilling machine 35 is positioned laterally of the carrying frame I, and while the drilling mechanism 35 is shown in a vertical position for down-hole drilling in this figure, it is to be understood of course that it may be positioned in any one of the almost infinite number of positions possible through the medium of the slide 38, coupling 4|, and the cone 45.

Figure 15 shows'in top plan the drilling rig in which the adjustment of the drilling mechanism 35, as indicated therein, is similar to the adjustments shown in Figures 12 and 13. However, in Figures 12 and 13 the cross arm 24 has been rotated so that the drilling mechanism is in vertical position while in Figure 15 the cross arm 24 is positioned to hold the drilling mechanism 35 in a horizontal position, and while the toolsupporting frame I5 is shown in Figure 15 as in its vertical position it is to be understood of course that the drilling mechanism 35 may be positioned in a horizontal plane with the supporting frame I5 in any one of the infinite number of positions permissible by the pivotal mount- ,ing of the supporting frame. The dot-and-dash lines I04 in Figure 15, illustrate adjustments of the drilling machine made by rotating or pivoting it through the medium of the rotatable connection between the cone 45- and the coupling 4|.

Figure 16 is similar to Figure 14 except that it shows the drilling mechanism 35 in a horizontal position with the tool-supporting frame in a lowered angular position. This positioning of the drilling mechanism in a horizontal plane is permitted by rotation of the cross arm 24 or the rotation of the carrying slide 38 about the sleeve 31.

The rotation of the cross arm 24 also permits the positioning of the cross arm so that the crank handle 34 may always be in a position to be conveniently reached by the drill-runner.

Figure 18 shows a different positioning of the tool-supporting frame I5 so as to permit low drilling. In this figure the frame I5 is swung on its pivotal axis over the carrying frame I, and the drilling mechanism 35 is shown positioned below the cross arm 24 instead of above as is shown in Figure 16. The dot-and-dash lines I05 merely illustrate how the drilling mechanism may be adjusted on an axis transversely of the plane of the carrying frame I by rotation of the cross arm 24, and it can of course be rotated or pivotally adjusted in a plane parallel to the carrying frame I by means of the coupling 4| and cone 45.

While these various diagrammatic Figures 11 to 1% illustrate certain positions and the dotand-dash lines illustrate certain adjustments of the drilling mechanisms in such positions, it is to be understood that practically all of the adjustments of the drilling mechanism with respect to the supporting frame 15 are permitted in any one of the various positions shown, and also that the supporting frame I5 may be moved in innumerable other positions due to its pivotal mounting.

It will be understood that the invention is not to be limited to the specific construction or arrangement of parts shown but that they may be widely modified within the invention defined by the claims.

What is claimed is:

1.. In a portable drilling rig, a carrying frame, a drill-supporting frame including side arms and a cross bar pivotally carried thereby, the cross bar of said supporting frame being rotatably carried by the side arms of the supporting frame, and means for holding said cross bar against rotary movement.

2. In a. portable drilling rig, a carrying frame, a drill-supporting frame including side arms and a cross bar pivotally carried thereby, the cross bar of said supporting frame being rotatably carried by the side arms of the supporting frame, means for holding said bar against rotary movement, a sleeve mounted on said cross bar for movement longitudinally therealong, and means carried by said sleeve for connection with a drilling machine .to permit swinging movement of a drilling machine on an axis transversely of the axis of rotation of the cross bar.

In a portable drilling rig, incombination, a drilling machine, a carrying frame, a drill-supporting frame including side arms and a cross bar pivotally carried thereby, the cross bar of said supporting frame being rotatably carried by the side arms of the drill supporting frame, means for holding said bar against rotary movement, 2. connecting unit mounted on said cross bar for-rotary movement therewith and slidable Illiv said supporting frame being rotatably carried by movement longitudinally along the bar, said connecting unit embodying means for eonnecting said drilling machine thereto. 4. In a portable drilling rig, in combination, a drilling machine, a carrying frame, a drill-supporting frame pivotally carried thereby, said supporting frame including a drill-carrying cross bar rotatably carried by the drill supporting frame, means for holding said bar against rotary movement, a connecting unit mounted on said cross bar for rotary movement therewith and slidable movement longitudinally along the bar, said connecting unit embodying means for connecting said drilling machine thereto, a rack on said cross bar, and a pinion on said connecting unit and meshing with said rack for moving said unit along said cross bar. 5. In a portable drilling rig, in combination, a drilling machine, a carrying frame, a drill-supporting frame including side arms and a cross bar pivotally carried thereby, the cross bar of said supporting frame being rotatably carried by the side arms of the drill supporting frame, means for holding said bar against rotary movement, a connecting unit mounted on said cross bar for rotary movement therewith and slidable movement longitudinally along the bar, said connecting unit including an elongated guide, a drilling machine connecting member slidable in said guide whereby the drilling machine may be slidably positioned beyond the ends of said cross bar. 6. In a portable drilling rig, in combination, a drilling machine, a carrying frame, a drillsupporting frame including side arms and a cross bar pivotally carried thereby, the cross bar of the side arms of the drill supporting frame, means for holding said bar against rotary movement, a connecting unit mounted on said cross bar for rotary movement therewith and slidable movement longitudinally along the bar, said connecting unit including an elongated guide, a drilling machine connecting member slidable in said guide projecting beyond either end of the cross bar and beyond the carrying frame when said connecting unit is at either terminus of its adjustment along said cross bar.

7. In a. portable drilling rig, in combination, a drilling machine, a carrying frame, a drill-supporting frame including side arms and a cross bar pivotally carried thereby, said cross bar of said supporting frame rotatably carried by the side arms of the frame, means for holding said bar against rotary movement, a connecting unit mounted on said cross bar for rotary movement 1 therewith and slidable movement longitudinally along the bar, said connecting unit including an elongated guide, a drilling machine connecting member slidable in said guide and projecting beyond either end of the cross bar and beyond the f carrying frame when said connecting unit is at either terminus of its adjustment along said cross bar, said connecting unit including means whereby the drilling machine may be swung on a pivotal axis transversely to the pivotal axis of said supporting frame.

8. In a portable drilling rig, the combination with a rock drill, of a' carrying frame, a drillsupporting frame pivotally carried by said carrying frame and adjustable to swing a drill carried thereby beyond two opposite sides of the supporting frame, said carrying frame including a cross bar rotatably connected to the frame, a drill-connecting and carrying unit rotatable with or independently of said cross bar and adjustable along the bar toposition the drilling machine at various points across the length of the carrying frame.

9. In a portable drilling rig, the combination with a rock drill, of a carrying frame, a drill supporting frame pivotally carried by said carrying frame and adjustable to swing a drill carried thereby beyond two opposite sides of the supporting frame, said carrying frame including a cross bar rotatably connected to the frame, a

drill-connecting and carrying unit rotatable with said cross bar and adjustable along the bar to position the drilling machine at various points across the length of the carrying frame, said drill-connecting and carrying member including means whereby the drilling machine may, be moved beyond the ends of said rotary cross bar.

10. In a portable drilling rig, the combination with a rock drill, of a carrying frame, a drillsupporting frame pivotally carried by said carrying frame and adjustable to swing a drill carried thereby beyond two opposite sides of the supporting frame, said carrying frame including a cross bar rotatably connected to the frame, a drill-connecting and carrying unit rotatable with said cross bar and adjustable along the bar to position the drilling machine at various points across the length of the carrying frame, said drill-connecting and carrying member including means whereby the drilling machine may be moved beyond the ends of said rotary cross bar, said drill connecting and carrying unit including means whereby the drilling machine may be swung about an axis transversely of the pivotal axis of the supporting frame.

11. In a portable drilling rig, the combination with a rock drill, of a carrying frame, a drill-supporting frame pivotally carried by said carrying frame and adjustable to swing a drill carried thereby beyond two opposite sides of the supporting frame, said carrying frame including a cross bar rotatably connected to the frame, a drill-connecting and carrying unit rotatable with said cross bar and adjustable along the bar to position the drilling machine at various points across the length of the carrying frame, said drill-connecting and carrying member including means whereby the drilling machine may be moved beyond the ends of said rotary cross bar, said drill connecting and carrying unit including means whereby the drilling machine may be a swung about an axis transversely of the pivotal axis of the supporting frame, and means for preventing rotation of said drill-connecting and carrying member independently of said cross bar.

12. In a portable drilling rig, the combination with a rock drill, of a carrying frame, a drillsupporting frame pivotally carried by said carrying frame and adjustable to swing a drill carried thereby beyond two opposite sides of the supporting frame, said carrying frame including a cross bar rotatably connected to the frame, a drill-connecting and carrying unit rotatable with said cross bar and adjustable along the bar to position the drilling machine at various points across the length of the carrying frame, said drill-connecting and carrying member including means whereby the drilling machine may be moved beyond the ends of said rotary cross bar, said drill connecting and carrying unit including means whereby the drilling machine may be swung about an axis transversely of the pivotal axis of the supporting frame, a rack on said cross bar, a pinion carried by said drill-connecting and carrying member and meshing with said rack for moving the drill-connecting and carrying member longitudinally along the cross bar.

13. In a portable drilling rig, the combination with a rock drill, of a carrying frame, a drill supporting frame pivotally carried by said carrying frame to normally swing on an axis transversely of the line of travel of the carrying frame and adjustable to swing a drill carried thereby beyond two opposite sides of the carrying frame, said supporting frame including a cross bar rotatably connected to the supporting frame, a drill connecting and carrying unit rotatable with said cross bar and adjustable along the bar to position the drilling machine at various points across the length of the carrying frame, said drill connecting and carrying member including means whereby the drilling machine may be moved beyond the ends of the rotary cross bar, and supporting means adjustably connected to said carrying frame whereby the supporting means may be adjusted in such manner that the supporting frame will swing on an axis transversely of the direction of travel of the carrying frame.

14. In a portable drilling rig, the combination with a rock drill, of a carrying frame, a drill supporting frame, pivotally carried by said carrying frame to normally swing on an axis transversely of the line of travel of the carrying frame and adjustable to swing a drill carried thereby beyond two opposite sides of the carrying frame, said supporting frame including a cross bar rotatably connected to the supporting frame, a drill connecting and carrying unit rotatable with said cross bar and adjustable along the bar to position the drilling machine at various points across the length of the carrying frame, said drill connecting and carrying member including means whereby the drilling machine may be moved beyond the ends of said rotary cross bar, said drill connecting and carrying unit including meanswhereby the drill may be swung about an axis transversely of the pivotal axis of the supporting frame, means for preventing rotation of said drilling connecting and carrying member independently of said cross bar, and supporting wheels swivelly carried by said carrying frame whereby the wheels may be adjusted in such manner that the drill supporting frame will pivot on an axis transversely of the direction of travel of the carrying frame.

CHARLES A. HIRSCHBERG. 

